BGS mineralogy and petrology collection record

Sample number S40681; S40681/A; S40681/B;
Sample Donor Wright,J.E.
Rock name 'Original entry: ?Calcareous Striped Quartzose Phyllite From Ben Lawers Group'
Stratigraphy Not entered
Comments Not entered
Locality details Lyon - Lochay HE scheme Stroninch - Duncroisk tunnel. 40ft from chainage zero point near outfall portal
50k map sheet Balquhidder (46)

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Map reference NN 5452 3536
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


S40681

Cross Polarized, S40681

Plane Polarized, S40681

Plane Polarized, S40681


S40681/A

Cross Polarized, S40681/A

Plane Polarized, S40681/A

Plane Polarized, S40681/A


S40681/B

Cross Polarized, S40681/B

Plane Polarized, S40681/B

Plane Polarized, S40681/B